Warning to anyone who receives these types of notices from Doppel. They are a defamation-as-a-service company. If the frivolous trademark notice doesn't work, they will follow it up with a letter to your host claiming that you're running a phishing website. If your host is lazy and paranoid (like OVH), they will block your IP immediately, and you'll have to deal with the fallout. Expect the letter to be sent on a Friday afternoon too.